I removed the clutch as it seemed sensible to replace while all was dismantled and was advised this is a pig of a job but maybe I was lucky. Did a search on this and ignored the ‘grease and mallet’ extraction method as it rarely seems to work, most end up with a face full of grease! One fellow BC recommended using a Dremmel grinder on the inside edge of the bearing, just through to the sleeve. This allows for the insertion of a slim screwdriver, a quick twist and out it came. Completely free of drama. Replaced with new bearing and sleeve after gently chamfering the leading edge. Tapped home gently with block of wood and a hammer. The bearing and sleeve was cheap so I bought a spare of each in case I fowled up on reassembly. As I said, I may have just been lucky but I was surprised how easy this was compared with some of the woes I’d read about. Pick a warm day, take your time and enjoy